textproduct: Quad Cities

KEY MESSAGES

- We will see temperatures gradually increase daily as we head towards the middle of next week, with 50s to low 60s not out of question by the middle of the upcoming holiday week.

- Aside from low-end chances for precipitation in the middle of next week, we will largely remain dry through much of the extended forecast.

SHORT TERM /THROUGH TONIGHT/

Issued at 234 AM CST Sat Dec 20 2025

Weak surface low will pass north of the area today, dragging a cold front through the area. Ahead of that, we have seen modest southerly flow through the night, resulting in a gradual increase in temperatures as we approach sunrise. Southerly flow will continue through the morning, allowing us to warm up even more by noon. Max temperatures will range from the upper 30s in our north to low 40s in our south. Aside from the breeze, it will be a seasonally- pleasant day for the most part. Precipitation chances remain <15%, as we are lacking moisture. Best moisture will be found closest to the surface low, which will be north of the area, but close enough that a light shower/drizzle cannot be completely ruled out in our northeast. Although, we are more likely to remain dry, with the only signs of a system passing by being passing clouds and a wind shift through the day.

Tonight, high pressure will move into the area with cooler air settling in behind the system. Clearing skies and decreasing winds will allow for temperatures to drop a bit tonight, ranging from the low teens in the north to low 20s in our south.

LONG TERM /SUNDAY THROUGH FRIDAY/

Issued at 234 AM CST Sat Dec 20 2025

We remain on track for a largely quiet long term, with upper level zonal flow dominating the region. Westerly flow will be locked overhead, with waves passing along the northern CONUS. With each of these waves, we will get some llvl wind shifts, which will bring through periods of southerly flow. These bouts of southerly flow will result in a gradual increase in temperatures through the next week. In fact, temperatures are forecast to trend well above normal through this timeframe, with widespread upper 40s and 50s throughout the area. Guidance continues to favor the warmest temperatures moving in on Christmas Day. While this is still a week out and much can change, current forecast shows temperatures approaching the low 60s south of the Interstate 80 corridor on Christmas. For reference, high temperatures during this time of the year are generally in the low-mid 30s. If these temperatures are to hold true, we will be approaching record temperature territory. Ensemble probabilities favor (40-60%+ chances) at least 50 degree high temperatures working into locations south of Interstate 80 as early as Tuesday of this upcoming week, trending north each day though mid-late week. Christmas Day, the Euro/GFS ensemble suites favor 50s working their way up to the Interstate 80 corridor with at least 60% favorability.

This timeframe is expected to remain mostly dry, aside from a few chances for light precipitation. Have opted to stick with the mostly dry conditions given by the NBM, as confidence remains low on the overall chances. Although, long term guidance is starting to show some chances for light precipitation in the middle of next week. Currently this is a weak signal, with light rain possible as a wave passes overhead. Otherwise, precipitation chances remain <15% for much of the extended. With systems passing through the north and leaving us in persistent southerly flow, will see moisture work into the mid-upper levels, resulting in periods of passing clouds. Otherwise, seasonal breeziness will be seen.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1120 AM CST Sat Dec 20 2025

VFR expected to prevail with breezy NW winds between 15 to 25 kts through this afternoon. Winds will subside tonight and become light and variable into Sunday AM.

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.